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More commonly known as water molds, oomycetes include some of the most devastating plant pathogens and pose severe threats to global food security.

The hyphae of water molds -- fungus-like pathogens that cause blight in crops -- are particularly pointy.

A bruise or crack will allow opportunistic fungi, bacteria, water molds and small insects to invade and colonize your pumpkins.

When pore spaces in soils fill with water, they open up navigable channels for the fungal spores of a water mold called Phytophthora.

The disease is caused by a water mold, phytophthora, literally “plant destroyer,” which leaches plants of their nutrients and has wreaked havoc around the world.